I recently came across an interesting Wikipedia article, the one about cytokine storms, at
https://en.wikipedia.org/wiki/Cytokine_storm . I have already talked here about my hypothesis that the release of pro-inflammatory cytokines may be part of the cause of POIS. I have based my pre-pack method around this idea, too.
This article is interesting to read with POIS in mind. In particular, the short "Research" section, at
https://en.wikipedia.org/wiki/Cytokine_storm#Research , cites nicotinamide, a form of vitamin B3 just like niacin, as an interesting lead to follow. We know that niacin helps many members to control their POIS symptoms.
Also, this section mentions magnesium has decreasing inflammatory cytokine production by modulation of the immune system. Magnesium has been my first weapon against POIS, and the only one for years. It is still part of my pre-pack.
Of course, POIS could only be seen as a low-grade, mild-to-moderate, cytokine storm, surely not to be compared with those who are life-threatening, like those that had been seen in COVID-19 patients. However, even if a low-grade type, we may learn useful things from what is learned for more server types of cytokine storms.